Attachment for dieing-out machines



Jue 15, 192s. 1,589,176

' W. I HUBBARD ATTACHMENT FOR DIEINGOUT MACHINES Filed June 24. 1924 4Sheets-Sheet 1 @51% @gf/@fw atto: nu

June 15 1926.

w. HUBBARD ATTACHMENT FOR DIEING-OUT MACHINES Filed June 24, 1924 4Sheets-Sheet 2 31a/vanto@ drm vm,

June 15, 192e. 1,589,176

W. HUBBARD ATTACHMENT FOR DIEING-OUT MACHINES Filed June 24, 1924 4Sheets-Sheet 3 june 15 1926 l '1,589,176

W. HUBBARD ATTACHMENT FOR DIEING-OUT MACHINES Filed June 24. 1924 4Sheets-Sheet 4 Cil Patented June 15, 1925.

nutren stares natuur ortica.

WILLIAM HUBBARD, 0F HERIESMER, NEVI YORK, ASSIGITOR TO VIILLIAM HUBBARDAND FREI) A. RAY, A PABTNERSHI?,

0F HERKIIVIER, NEW' YORK.

ATTACHMENT FOR DIEING-OUT MACHINES.

Application inea June afi, 1924. serial N6. 722,145.

This invention relates to improvements in dieing-out machines and ismore particularly directed to an attachment for such machines providingan automatic stock feeding and blank cutting device'.

It is `an object of this invention to pro-` vide an attachment fordieing-out machines to automatically cut blanks from a roll ot materialand including an improved means for feeding the stock to the cutters.

Another object of this invention is to provide an attachment fordieing-out machines to .automatically out blanks from a roll of materialand including improved means for feedingl the stock to the cutters withad -ditional means for adjusting the stroke of the feeding mechanismaccording to the size of the blanks being cut.

A further object of this invention consists in the provision of anattachment for sole cutting' machines including improved means forintermittently feeding the stock to the cutters and means toautomatically elevate the end of the stock above the cutters before thebeginning ot each feeding stroke.

Still another object ot' this invention consists in the provision ot' animproved attachment for dieing-out machines includ ing means forintermittently feeding the stock, together with guides for the sides andtop of the stock, and improved means for sup} )orting the stock rolls.

A still further object of this invention consists in the provision of animprovel double die for use in cutting blanks from sheet material cn adieing-out machine and having means for severing the waste to preventclogging.

These and 'further objects will be more apparent from the followingdescription taken in conjunction with the attached drawings, whereinFigure l is a front elevation of a dieing-out machine showing theimprovement according` to this invention in place;

Figure 2 is a longitudinal vertical tion on line 2, 2, ot Figure l;

Figure 3 is a perspective View on an enlarged scale, certainparts beingcut away to more clearly illustrate the die. theI feed 'table and theguide means; I

' ligure 1.1. is a partial side elevai..

secs

j. en. an

involves cutting` 6, 6 of Figure 4 illustrating the means of Y mountingthe feed block;

Figure ,7 is a transverse section through the die and die bed; and

Figure 8 isa partial' vertical section on line 8, 8 of Figure 2.

It has been the custom in the cutting of blanks from materials such asfelt for sole fillers, soles, heel seat fillers, uppers, etc., in thesho-e manufacturing business to use a machine commonly known as a gearor gearless sole cutting` machine and also known in the trade .as a beamdinker or dieing-out machine. Such a machine usually includes a die' bedsupport and a vertically reciprocating cutting plate or beam operated bythe tripping of a clutch by pressure of the operators toot upon atreadle. `This method of cutting blanks involved the manual placing ofthe die upon the stock in various positions in order to economize inmaterial. after which the clutch was tripped to torce the die throughthe stock. This operation has always been considered very dangerous, andowing to the'danger of mutilated hands has resulted in great ditiicultyin iinding operators to work on these machines. Furthermore, this handmethod of cutting blanks from a large sheet of stock the stock intosquares r rectangles from a large roll, resulting` in considerablewastage at the edge of each rectangle.

This invention makes use o'l' the same type ot machine adding as anattachment means for fastening the die to the die bed and automaticmeans for intern'iittently feeding the stock from a continuous roll justthe right distance after each stroke of the cutting plate to supplysuticient material for the blank or blanks to be cut at the next stroke.This involves only a wastage at one end of a large roll usually of aboutone hundred feet and results in a great saving et f'naterial, whil atthe same time eli""iinat nig any necessiti et manual operationv et Cil42 upon the dies. These knives extend well Vbeyond the edges of thestock and have their upper cutting edges in the same plane as theequivalent in length to the distance the stock is fed for each cuttingoperation.

Directly above the dies the plunger head 14 supports the cutting plate14, a cushion member i4 being interposed between these two parts. AThelowermost position of the cutting plate at the end of the stroke isadjustable by mechanism on the machine (not shown) in order that .it mayjust contact with the cut-ting edges of the die to sever the blank fromthe stock.

r)The stock is fed to the Vdies over a horizontal feed table 43 suitablymounted 'on and connected to a. pair of brackets 44 bolted as.

at 45 to the vertical edges of the side plates 27 on the side oppositefrom the feed trough 38.

For the purpose of supporting a roll of stock there is provided at theremote end of the feed table 43 a pair of brackets 46 bolted to the feedtable and having vertically eX- tending arms 47 provided with channels46, on their facing sides, and with holes 49 forming journals for theshaft 5() of a small roller 51 arranged just beyond the end of the feedtable 43 and having its upper surface very slightly above the plane ofthe top of the feed table.

The roll of stock is adapted to be mounted upon a rod 52 of a length toengage within the channels 48 so that it may be said to float thereinwith the weight of the roll of material supported upon the freelyrotatable roller 51 so that the stock may be fed from underneath themain roll passing over the roller 51 and resting lupon the surface ofthefeed table 4.3.

The plane of the top of the feed table 43 is slightly elevated above theplane of the cutting edges of the dies in order that the material may befed forward over the dies without being hindered in its forwardmovenient by catching upon the edges of the dies. In order that thematerial may be pressed down against the dies by the cutting plate atthe time of cutting, there is provided on the forward end of fthe feedtable the movable flap or hingedfportiou 53 having its upper surfaceforming an extension of the upper surface of the feed table, pivotedthereto about the rod 54 passing through the lugs 55 extending from thesides of the feed table and through the reinforcing ribs 56 on thebottom of the flap. In order to maintain the flap in its proper normalposition, it is provided with the arm 57', pivoted to one of the ribs56, projecting `downwardly therefrom and provided at its lower endl'with the rod 57 surrounded by a coil spring 58. The rod 57 passesthroughv and above' the dies,

the spring abuts against one arm of the L-shaped bracket 59 bolted to'one of the side frames 10. The rod 57 is provided with the lock nuts 60beneath the bracket 59 to limit the amount that the spring 58 willelevate the forward edge of the flap above the top of the feed table..It will be seen that this arrangement will serve to maintain the uppersurface of the flap in any desired angular relation with the uppersurface of the feed table but will allow itv to bedepressed upon theapplication of pressure upon its surface.r

This hinged flap serves two purposes. In

the first place it supports the stock almost to the cutting edge of thedies and holds the edge above the level thereof as previously explainedin order to prevent catoliingof the edge of the stock against the diesduring the feeding movement thereof. Upon the downward movement of theplunger head to bring the cutting plate in engagement with the cuttingedges of the dies to sever the blanks from the main sheet of the stockthe inner edge of the cutting plate first engages the stock resting ontop of the hinged flap and forces the flap down until the stock restsupon the cutting edges of the dies. Further downward movement of thecutting plate severs the blanks from the sheet of stock and allows themto drop through into the trough 38. Immediately upon the upward movementof head, pressure on the hinged flap is released and it returns to itsnormal position elevating the forward edge of the stock from theposition it has been pressed into by the cutting action of the cuttingplate, thus preparing it to be again fed forward ready for the next out.

This machine is adapted for use with various widths of stock dependingupon the extreme length of the dies used, and in order to maintain thematerial exactly central of the dies, in spite of the fact that the rollhas some freedom of longitudinal movement upon its supporting rod, thefeed table is provided with a pair of adjustable side guides 61extending longitudinally of the feed table and supported from a pair oftransverse bridge bars 62 arranged parallel to and above the surface ofthe feed table 43 and supported by means of the integral depending anges63 bolted to thesides of thefeed table.` These bridge bars are providedwith longitudinal slots 64 adapted to slidably receive therethrough theShanks of thumb screws 65 which are threaded into the guide members 61.Interposed between the heads of the thumb screws 65 and the top surfacesof the bridge bars 62 are the washers 66. lt will be clear that uponlooseningV the pair of thumb screws conneeted to either one of theguides G1 it mav be adjusted transversely of the'feed table the plunger'n 43 and locked in the desired position by the tightening ot the thumbscrews rigidly clamping' it against the under surface ot the bridgebars. Riveted to the under surface ot' the bridge bars 52 between theguides is the thin metal sheet 67 having an upturned end 68 facing' inthe direction ot the roll of stock. riiis'plate is parallel to andspaced above the top et the iced table 41? a distance substantiallyequivalent to the thickness ot the stock bei ted and `forms in eiect astock-feed cover plate since it is located directly above the feeding'device, which will be later described. lt extends substantially from therear or the guide members 61 to the joint between the reed table and thehinged itlap and is ot a width slightly less than the narrowest stockthat will be used upon the machine. It will be clear that the stockbeing-fed from the roll rests upon the surface ot the feed table i-3beneath the surface oi the stock-feed cover plate G7 and between theinner edges ot the guides 61, thus being' restrained against movement inany direc-tion except longitudinally ot the feed table.

Vl`he stockfrom the roll must be ted to and above the dies and thisiiecdingj action must be intermittent and in s fnehronism with themotion ot the plunger head, means being provided to retain the stockstationary during" the actual cutting operation and for sufficient timethereafter to allow the hinged flap 53 to raise the `forward edge of thestock above the cutting,- edges ot the die. For this purpose the stockis fed toward the die by means ot a reciprocating` block, the period otrest for the stock occurringT upon the return movement of' this feedblock. As best` shown in Figures 2, sand (i the feed block (i9con'iprises a block olf metal having;` a fiat up )er surface 70 andlongitudinally extending; side tlanges 71. The block is adapted toreciprocate in ay longitudinal opening` 72 providedvin the leed table sothat its upper surface 70 is 'flush with the top ol' the feed table, the'flanges T1 lbeing` guided between the lower surlace oli the feed tableand a pair ot' L-shaped ways bolted to the under surface o't' the Vteedtable.

lfhe feed block is adapted to be reciprocated through linkage connectedto the main drive shalt 22 ol' the dieingpout machine and tor thispurpose the shaft is provide-d with a centrally located eccentric .731having tltted thereto an eccentric strap and rod 75. To one ot the crossmembers 12 oit the machine trame is bolted the vertical bracket 76 whichprovides tulcrum points tor two bell crank levers 77 and 78respectively. The eccentric rod is pivoted to the lower vertical arm 79of the bell crank lever 77 and the other or horizontal arm 8O of thisbell crank lever is connected by a link 81 to the horizontal arm 82 oflthe bell crank lever 78 whose upper vertical arm 83 is connected bymeans oiv theparallel links Se one on either side thereo't to the 'l'eedblock. The arm 82 ot the bell crank lever 78 is provided with a seriesot longitudinally7 spaced holes and the end of the link 81 connectedthereto is biurcated and provided with a pin 85 passing through the armsthereot' and adjustable into any one o't the holes in the arm S2, inorder to vary the eiiective length ot the lever arm.

The lowerend ot the link 81 is pivoted by means of a bolt 86 to anadjustable block 87 slidably mounted between the ways 88 of the arm 8'()olf the bell crank lever 77. The block 87 is provided with an L-shapedmember 89 adapted to slide along,` one tace and the top ot the arm SOand secured to the block 8T by the bolt 86. This l.-shaped member hasthreaded aperture parallel to its direction ot' sliding within the waysand through this threaded aperture is passed a threaded rod 90 having ahand wheel 91 on one end thereof. The hub of this hand wheel isprovidedwith a groove, journaled in a plate 92 fastened to the end ot' the bellcrank lever. rlhe bolt 86 is enlarged at 86 forminga bearing for thelink 81 and a shoulder abutting the block 8'?. lt will be seen thatrotation of the hand wheel Q1 will cause a. longitudinal adjustment otthe pivot point of the lin-k S1 in respect to the 'tulcrum of the bellcrank lever 77, and this adjustment may be locked by'tightening the nut8G on the bolt SG, thus clamping the arm SO between the blocks 87' and8S). This mechanism provides means tor varying the length ot the arm ofthe bell crank lever 7T to adjust the distance of movement of the feedblock GS).

'llhe parallel links Sl are adapted to reciprocate the feed block andalso to project and retract the feeding pins 93 which are mounted in theholder plate 9st and project into the holes or throats 95 passing clearthrough the 'leed block at an angle ot substantially le@ trom thevertical in such a manner that the pins slope toward the dies. Thefeeding pin holder plate 9a is mounted on a backing plate 9Gk having;`depending therefrom at either end the lugs or flanges 27. The feed plateis providedV near its rear end with a pair of depending lugs 98 drilledto receive a transverse arbor 99 upon unich is pivoted the bell crankmember or rock arm 100 which forms a connecting` member between the feedplate and the parallel links and a supporting,Y means for the feed pinbacking` plate.

This rock arm is substantially L-shaped in elevation and has at theintersection of the two arms an enlargement forming a journal adaptedfor rotation about the arbor 99. The end of the shorter arm istransversely drilled to receive the arbor 101 which pivots lll) theparallel links 84 to the rock arm. The 'exe treme end of the longer armis drilled transversely to receive the arbor 102 which passes throughthe lugs 97 of the feed pin backing plate and serves to pivotallyconnect that member to the rock arm. 1n addition the rock arm isprovided with thetwo parallel extending lugs or stop members 103 and 104which are adapted to alternately engage with the under surface of thefeed plate and limit the amount of movement. of the rock arm about itsarbor 99. The three arbors 99 101 and 102 are lubricated by means of agrease cup 105 through the grease channels 106.

In operation the feed block obtains its movement from the eccentric 74mounted on the main drive shaft 22 which rotates con tinuously. Theeccentric 74 and the eccentric; rod 75 change the rotary motion into`long {itudinal motion, and thus the horizontal arm of the bellcrank'lever 77 reciprocates in a vertical plane transmitting such motionto the link 81 and through that link to the arm 82 of the bell cranklever 78 which changes the motion from up and down to longitudinally ofthe feed table and the links 84 then transmit this longi- .tudinalreciprocating motion to the feed block. rilhe length of the stroke ofthe feed block, as will be noted, is readily adjustable by means of thescrew 90 and the adjustable pin connection at opposite'ends of the link81. Assuming the feed block to be in a position most remote from thedie; aforward pull upon the links 84 will cause naturally a forwardmovement of the feed block. at thegsame time rotating the` rock arm 100about its arbor 99 until stopped by the lug 104 and projecting the feedpins 93 through the throats until their pointed ends project asubstantial distance above the surface of the feed block as shown inFigure 4. The stock feed cover plate prevents any upward movement of thestock and hence the pins are projected into the bottom thereof and carrythe stock forward with them.

pon reaching` its closest position to the die, the motion of the feedblock is arrested as the `motion of the direction of the links 84 isreversed and the rock arm 100 is then rotated in the opposite directionuntil the stop 103 engages the-undersurface of the feed block, thuswithdrawing the tips of the `pins within the throats `and releasing` thestock So that the feed block can move to its rearwardposition where thepins can again engage` the stock to move it forward.

`In order to insure that the feeding pins will be projected into thematerial which is to be fed forward before any motion of the `feed blocktakes place and that they be released before the return movement of thefeed block begins to thus insure the exact amount of material being fedforward at each stroke, one Hangs 71 of the feed block that the feedpins may above the treadle 69 is provided with a friction gib. 107constrained to move therewith by the guide pins 109 and spring pressedagainst'the vertical wall of the guide 73 by means of the coilv springs108 set in holes in thefeed block. rllhe effect of this friction gib isto retard the movement of the feed block upon the reversal of links 84at either end of the stroke in order be projected above the surface ofthe feed block upon the initial forward movement of the links afterwhich, when the stop 104 engages the under-surface of the feed block thefeed block itself will start forward. The same procedure in the reversedirection is effected upon the return movement of the block withdrawing`the feed pins from the stock before moving the block in the rearwarddirection. Oil holes 110 are provided in the surface' of the feed tableto,.provide adequate lubrication for the ways in which the feed blocktravels.

In order that the machine may operate continuously without the operatorkeepinghis foot upon the treadle 25 there is provided a lever 111pivoted at112 to one of the cross members of the frame of the machineand provided at the upper end with a handle 113'. constrained to moveinward by means of a sprinjg` 114 and is so positioned as to restagainst the end of the treadle 25 when the treadle is in its normalposition as shown in Figure l. Just below the treadle, the lever widensout on a taper as shown at 115 and again narrows down as at 116 toprovide the horizontal shoulder 117. The lower end of the lever isprovided with a horizontal member 118. It will be seen that upondownward pressure of the treadle the end thereof will slide Valong` theinclined surface of the widened portion of the lever direction ofmovement of the The lower end of the lever is pushing it to the leftagainst the spring 114 until the upper surface ofthe treadle comes belowthe shoulder 117 when the spring will push the lever to the rifrht andengage the shoulder 117 above the surface of the treadle and thus retainit in its lowermost position to hold the clutch engaged so that acontinuous drive of the machine is effectled. lIn order to stop themachine, it is onlv necessary'to move the handle 113 to the right orkick the horizontal member 118 to the left to release the shoulder' 117Yfrom and allow it to move upward under the action of its spring 26.

vFrom the above description it will be evi` dent that this inventionprovides a machine for cutting blanks from a roll of material in. anentirely automatic manner requiring' only the services of the operatorto initially set the dies in position and adjust the length of the feedstroke to that requirediby the size of the die, after which attentionneed only be given to keeping` the macnme supplied with rolls of stockand to carryaway the finished blanks. llVith the old type of machine, asdescribed in the first part of this specification, an operator working aday of nine hours could cut from two thousand to fortyfive hundred pairsof soles or other blanks. n order to produce the maximum number ofblanks the operator would have to work so rapidly that the he could notcarefully place the die, thus wasting a considerable amount ofmaterial.. A, device of this invention will cut from 1:20 to 1S() pairsof blanks in a minute. Assumi' g an average speed of lll() strokes perminute, it will cut 8400 pairs perA hour or approximately 35,- GOO in aday. By using the material in rolls of one hundred feet or more, it isobvious that there is a wastage kbut once in this length at the finalend of er "h roll.

This machine has been ill` Itraded in connection with dies for cuttingsoles, but it is to be understood that it is not limited to thisparticular use but may serve to cut blanks of any desired shape or sizeup to the capacity', of the macnine from any sort of material which-canbe-cut vfn the. die.

lfilhile but one embodiment oi this invention has been illustrated anddescribed itis to be Vunderstood that the invention only lto belimited'by the scope of the. attached claims.

Having thus described my invention what l claim as new and desire tosecure by Letters Patent is:v

1 n an attachment for dieing-out machines having a stationary` die-bedsupport and reciprocating cutting plate in combination a die mounted onsaid support below said cutting plate, a feed table above the level ofthe cutting edge of said die, a depressible extension on said tablebeneath said cutting plate, a support `for a roll of stock at one end ofsaid table, reciprocating 'ieans below said table, feeding pins thereonand means to alternately project said pins above and retract them belowsaid table.

2. In an attachment for dieing-out machines having a stationary dic-bedsupport and reciprocating cutting` plate in combination a die mounted onsaid support below said cutting plate, a feed table beside said die andabove the cutting edge thereof, a hinged extension on said feed tableadjacent said die adapted to be engaged and depressed by said'cuttingplate and means to normally maintain said extension in position tosupport the stock above said die.

3. In an attachment 4for dieing-out machines having a stationary die-bedsupport and reciprocating cutting plate in combination, a die mounted onsaid support having its cutting edges uppermost and adapted to cooperatewith said cutting plate in cutting blanks, a stock supportingy device, afeed table between said stock support and said die, intermittent feedmechanism below the level of said feed table and means partially in thepath of said cutting plate to automatically raise said stock above thelevel of the cutting edges of said die after each stroke of the cuttingplate and before 'the forward movement of the feed mechanism.

d. ln an attachment for dieing-out machines having a die-bed support andreciprocating cutting plate in combinrwron, a die mounted on saidsupport below said cutting plate, a horizontal Afeed table above andbeside the cutting edges said die, means supported by said table remotefrom said die to support a roll of stoel', a feed block slidablj;mounted in said f ,fl table` and means to reciprocate said blocksynchronously with said cutting plate.

5. ina stock feeding attachment for dieing-out machines, in combinationa horizontal feed table, means at one end thereof to support a roll ofsheet material, means spaced above said table to retain said sheetthereon, a feed block slidably mounted in said table and having itssurface fiush with the top thereof, means to reciprocate said block,pins extending through said block and means to project said pins abovethe surface of said block and into said stock before and during theforward moven'ient of said feed block.

(3. ln a stock feeding attachment for dieing-out machines, incombination a horizontal feed talle, means at one end thereof to supporta roll of sheet material, means spaced above said table to retain saidsheet thereon, a feed block slidably mounted in said table and havingits surface flush with the top thereof, a bell crank pivotally connectedto said feed block, feed pins connected to one arm of said bell crankand extending into holes passing through said feed block, reciprocatingdrive means connected to the other arm of said bell crank adapted toproject said pins above the surface of said feed block before and duringthe forward movement thereof and to retract them within said blockbefore and during the rearward -movement thereof to intermittently feedsaid stock.

7. In a stock feeding attachment for dieing-out machines, in combinationa horizontal feed table, means at one end thereof to support a roll ofsheet material, means spaced above said 'table to retain said sheetthereon, a feed block slidably mounted in said table and having itssurface flush with the top thereof, friction means to resist the slidingof said block, a bell crank pivotally connected below and to said blockon an axis transverse to the direction of movement of said block, feedpins mounted on one arm of said bell crank and Aadapted vto be projectedthrough .said feed block to at times engage said stock, drive meansconnected to the other arm of said bell crank and means to adjust thestroke of said feed block.

8. In an attachment for dieing-out machines having a'die-bed Support7 areciprocating cutting plate and a drive shaft, in combination, a diemounted on said support beneath said cutting plate, a feed table besideand above the cutting edge of said die, a feed block mounted forreciprocation in and longitudinally of said feed table, a stock rollmounted on said table remote from said die, a bell crank lever pivotedto said machine and having one arm thereof associated with said feedblock, a second bell crank lever, an eccentric on said drive shaft, aneccentric rod connecting said eccentric to one arm of .said second bellcrank lever, a link connecting the remaining arms of said bell cranklevers and means to adjust the distance of one end of said link from thefulcrum of the corresponding bell crank lever.

9. In an attachment for dieing-out machines having a die-bed support, incombination a die having a cutting edge, mounted on said support, a.feed table beside .said die and having its surface ina plane beyond thecutting edges of said die, a hinged extension on said table adjacentsaid die, means lo normally maintain said extension in the .same planeas said table, means on the opposite end of said table to support a rollof stock to be cut, side guides on said table to guide said stock oversaid die and intern'littent feeding mechanism associated' withsaidtable.

l0. In an attachment for dieing-out machines having a die-bed support,in combination a die having a cutting edge, mounted on said support, afeed table beside said die and having its surface in a plane beyond thecutting edges of said die, a hinged extension on said table adjacentsaid die, means to.

normally maintain said extension in the same plane as said table, meanson the opposite end of said table to support a roll of stock tobe out,adjustable side guides on said table to guide said stock over said dieand adjustable, intermittent, feeding mechanism associated With saidtable.

1l. In a stock feeding attachment for dieing-out machines, incombination a. feed table, a die adjacent one end thereof, a stock rollsupporting means at the opposite end thereof including a pair ofvertically grooved guides, a rod slidably mounted in said guides andadapted to be passed through the center of the roll of stock, a rollerpivotally mounted in said guides below and parallel to said rod to.support said stock roll, the upper surface of said roller beingsubstantially in the same plane as the Work surface of said feed table.

l2. In an attachment for dieing-out machines having a die-bed supportand reciprocating cutting plate in combination, a die mounted on saidsupport having its cutting edges uppermost and adapted to cooperate withsaid cutting plate in cutting blanks, a stock supporting device, a. feedtable between said stock support and said die positioned above thecutting edge of said die, intermittent feed mechanism below the level ofsaid feed table, means to automatically raise said stock above the levelof the cutting edges of said die after each stroke of the kcutting plateand before the forward movement of the feed mechanism and means toprevent clogging of the die by Waste material.

vIn testimony whereof I hereunto affix my signature.

WILLIAM HUBBARD. i

